package com.clm.waimai.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.clm.waimai.common.R;
import com.clm.waimai.dto.DishDto;
import com.clm.waimai.dto.SetmealDto;
import com.clm.waimai.entity.Category;
import com.clm.waimai.entity.Dish;
import com.clm.waimai.entity.Setmeal;
import com.clm.waimai.entity.SetmealDish;
import com.clm.waimai.service.CategoryService;
import com.clm.waimai.service.DishService;
import com.clm.waimai.service.SetmealDishService;
import com.clm.waimai.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 套餐管理
 */

@RestController
@RequestMapping("/setmeal")
@Slf4j
public class SetmealController {
    @Autowired
    private SetmealService setmealService;

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private DishService dishService;

    /**
     * 新增套餐
     * @param setmealDto
     * @return
     */
    @PostMapping
    @CacheEvict(value = "setmealCache", allEntries = true)
    public R<String> save(@RequestBody SetmealDto setmealDto){
        log.info("套餐信息：{}", setmealDto.toString());

        setmealService.saveWithDish(setmealDto);

        return R.success("新增套餐成功");
    }

    /**
     * 套餐分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        //分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page, pageSize);
        Page<SetmealDto> dtoPage = new Page<>();

        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        //添加查询条件，根据name进行like模糊查询
        queryWrapper.like(name != null, Setmeal::getName, name);
        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        setmealService.page(pageInfo, queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dtoPage, "records");
        List<Setmeal> records = pageInfo.getRecords();

        List<SetmealDto> list = records.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item, setmealDto);
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;
        }).collect(Collectors.toList());

        dtoPage.setRecords(list);

        return R.success(dtoPage);
    }

    /**
     * 删除套餐
     * @param ids
     * @return
     */
    @DeleteMapping
    @CacheEvict(value = "setmealCache", allEntries = true)
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("ids:{}", ids);

        setmealService.removeWithDish(ids);

        return R.success("套餐数据删除成功");
    }
    /**
     * 根据id查询套餐信息和对应的菜品信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<SetmealDto> get(@PathVariable Long id) {
        SetmealDto setmealDto = setmealService.getByIdWithDish(id);
        return R.success(setmealDto);
    }

    /**
     * 修改菜品
     * @param setmealDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody SetmealDto setmealDto) {
        log.info(setmealDto.toString());

        setmealService.updateWithDish(setmealDto);

        return R.success("修改套餐成功");
    }

    /**
     * 修改套餐状态
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> updateStatus(@PathVariable int status, @RequestParam List<Long> ids){
        log.info("int:{}, ids:{}", status, ids);
        setmealService.updateStatus(status, ids);
        return R.success("修改成功");
    }

    /**
     * 根据条件查询
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    @Cacheable(value = "setmealCache", key = "#setmeal.categoryId + '_' + #setmeal.status")
    public R<List<Setmeal>> list(Setmeal setmeal){
        log.info("id:{}, status:{}", setmeal.getCategoryId(), setmeal.getStatus());
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() != null, Setmeal::getCategoryId, setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null, Setmeal::getStatus, setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);

        return R.success(list);
    }

    /**
     * 套餐详细
     * @param setmealId
     * @return
     */
    @GetMapping("/dish/{id}")
    @Cacheable(value = "setmealDishFlavorsCache", key = "#setmealId + '_' + 'DishFlavors'")
    public R<List<DishDto>> setmealDish(@PathVariable("id") Long setmealId){
        LambdaQueryWrapper<SetmealDish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SetmealDish::getSetmealId,setmealId);
        //获取套餐里面的所有菜品，这个就是SetmealDish表里面的数据
        List<SetmealDish> setmealDishList = setmealDishService.list(queryWrapper);
        List<DishDto> dishDtoList = setmealDishList.stream().map((setmealDish -> {
            DishDto dishDto = new DishDto();
            //其实这个BeanUtils的拷贝是浅拷贝
            BeanUtils.copyProperties(setmealDish, dishDto);
            //这里是为了把套餐中的菜品的基本信息填充到dto中，比如菜品描述，菜品图片等菜品的基本信息
            Long dishId = setmealDish.getDishId();
            Dish dish = dishService.getById(dishId);
            BeanUtils.copyProperties(dish, dishDto);
            return dishDto;
        })).collect(Collectors.toList());

        return R.success(dishDtoList);
    }
}
